Hash

Bio::AnnotationCollectionI is a Perl interface for annotation collections. SYNOPSIS # get an AnnotationCollectionI somehow, eg $ac = $seq->annotation(); foreach $key ( $ac->get_all_annotation_keys() ) { @values = $ac->get_Annotations($key); foreach $value ( @values ) { # value is an...

Tie::DB_Lock Perl module can tie hashes to databases using shared and exclusive locks. SYNOPSIS use Tie::DB_Lock; use DB_File; tie(%hash, Tie::DB_Lock, $filename, rw); # Open for writing $hash{key} = value; untie %hash; tie(%hash2, Tie::DB_Lock, $filename); # Default is read-only...

NDBM_File is a Perl module that allows tied access to ndbm files. SYNOPSIS use Fcntl; # For O_RDWR, O_CREAT, etc. use NDBM_File; tie(%h, NDBM_File, filename, O_RDWR|O_CREAT, 0666) or die "Couldnt tie NDBM file filename: $!; aborting"; # Now read and change the hash $h{newkey} =...


Platforms: *nix

Config::File is a Perl module to parse a simple configuration file. SYNOPSIS use Config::File; my $config_hash = Config::File::read_config_file($configuration_file); read_config_file parses a simple configuration file and stores its values in an anonymous hash reference. The syntax of the...


Platforms: *nix

LBC Libraries is a set of easy C libraries that provide classical data types and structures (string, hash, queue, stack, tree). LBC Libraries package is focused on simplicity and portability. It uses ANSI C (C98 standard not required), and provides the most generic approach possible so that...


Platforms: *nix

Basset::Container::Hash Perl module implements a layered hash. The easiest way to explain is with an example: my %x = (a => b); tie my %y, Basset::Container::Hash, %x; #<- %x is the parent of y. print $x{a}; #prints b print $y{a}; #prints b (inherited from x) $y{a} = foo; $y{z} = bar;...


Platforms: *nix

Simple file and text hash value calculator. Supports more than 130 hash functions including: AP Hash, Adler 16, Adler 32, Adler 8, BKDR Hash, BP Hash, CK SUM MPEG-2, CK Sum, CRC DNP, CRC-16, CRC-16 (IBM), CRC-16 (Kermit), CRC-16 (Modbus), CRC-16 (Sick), CRC-16 (X25), CRC-16 CCITT (0x1D0F), CRC-16...


Platforms: Windows

Data::PropertyList is a Perl module that can convert arbitrary objects to/from strings. SYNOPSIS use Data::PropertyList qw(astext fromtext); $hash_ref = { items => [ 7 .. 11 ], key => value }; $string = astext($hash_ref); # ... $hash_ref = fromtext($string); print $hash_ref->{items}[0];...


Platforms: *nix

W3C::LogValidator::Basic is a W3C log validator. It can sort web server log entries by popularity (hits). SYNOPSIS use W3C::LogValidator::Basic; my $b = new W3C::LogValidator::Basic; $b->uris(http://www.w3.org/Overview.html, http://www.yahoo.com/index.html); my $result_string=...


Platforms: *nix

PDL::IO::FITS Perl module offers a simple FITS support for PDL. SYNOPSIS use PDL; use PDL::IO::FITS; $a = rfits(foo.fits); # read a FITS file $a->wfits(bar.fits); # write a FITS file This module provides basic FITS support for PDL, in the sense of reading and writing whole FITS files....


Platforms: *nix

ODBM_File is a Perl module to allow tied access to odbm files. SYNOPSIS use Fcntl; # For O_RDWR, O_CREAT, etc. use ODBM_File; # Now read and change the hash $h{newkey} = newvalue; print $h{oldkey}; ... untie %h; ODBM_File establishes a connection between a Perl hash variable and a...


Platforms: *nix

Tie::ListKeyedHash is a system allowing the use of anonymous arrays as keys to a hash. SYNOPSIS use Tie::ListKeyedHash; [$X =] tie %hash, Tie::ListKeyedHash; my $live_key = [key,items,live]; $hash{$live_key} = Hello!; $hash{[key,trees,grow]} = Goodbye!; print...


Platforms: *nix

strhash is a hash table library. A strhash is an associative array, mapping keys to values. Keys and values may be strings of up to 2 gigabytes (2^31) bytes of length, containing any possibly character. Keys need not be unique. All hashing libraries i used before had some kind of more or less...


Platforms: *nix

Class::Struct::FIELDS module combine Class::Struct, base and fields. SYNOPSIS (This page documents Class::Struct::FIELDS v.1.1.) use Class::Struct::FIELDS; # declare struct, based on fields, explicit class name: struct (CLASS_NAME => { ELEMENT_NAME => ELEMENT_TYPE, ... }); use...


Platforms: *nix

Tie::FileLRUCache is a lightweight but robust filesystem based persistent LRU cache. SYNOPSIS OBJECT INTERFACE use Tie::FileLRUCache; my $cache = Tie::FileLRUCache->new({ -cache_dir => $directory, -keep_last => 100 }); # Inserting value into LRU cache using -key $cache->update({ -key =>...


Platforms: *nix

MLDBM::TinyDB is a Perl module that can help you to create and manipulate structured MLDBM tied hash references. SYNOPSIS use MLDBM::TinyDB; ## or use MLDBM::TinyDB qw/db add_common/; @common = qw/created updated/; ## optional $tree = [TABLE, FIELDS_LIST, [TABLE1, FIELDS_LIST1,...


Platforms: *nix

Getopt::Helpful is an integrated option hash / help messages. STATE This module is still under development, but is being publish on CPAN to satisfy some code which depends on it. The interface may change in a future version and some of the functionality is not yet complete. SYNOPSIS This...


Platforms: *nix

MLDBM is a Perl module to store multi-level hash structure in single level tied hash. SYNOPSIS use MLDBM; # this gets the default, SDBM #use MLDBM qw(DB_File FreezeThaw); # use FreezeThaw for serializing #use MLDBM qw(DB_File Storable); # use Storable for serializing $dbm = tie %o, MLDBM...


Platforms: *nix

hashit is a generic hash library. hashit implements diverse collision handling methods. This function creates a hash table which is returned as a hash_t type. errno is set to ENOMEM if there wasnt enough memory avaliable for creating the table. Return value is a reference to the table just...


Platforms: *nix

Taint is a Perl extension to taint variables. SYNOPSIS use Taint; taint($taintvar[, $anothervar[, $yetmorevars]]); $bool = tainted($vartocheck); taint() marks its arguments as tainted. tainted() returns true if its argument is tainted, false otherwise DIAGNOSTICS Attempt to taint...


Platforms: *nix